Rumex confertus

Willdenow

Enum. Pl., 397. 1809.

Common names: Russian dock
IntroducedIllustrated
Synonyms: Rumex alpinus var. subcalligerus Boissier
Treatment appears in FNA Volume 5. Treatment on page 517. Mentioned on page 496, 519.

Plants perennial, glabrous or weakly papillose-pubescent especially when young, with fusiform, vertical to oblique rootstock or short rhizomes. Stems erect, branched above middle, 50–100 (–130) cm. Leaves: ocrea mostly deciduous or rarely partially persistent at maturity; blade ovate-triangular, broadly ovate, or ovate-elliptic, 20–30 × 15–25 cm, base deeply and broadly cordate, margins entire to obscurely repand, usually slightly crisped or undulate, apex obtuse to subacute. Inflorescences terminal, occupying distal 1/2 of stem (branches often slightly arcuate at base), rather dense, widely paniculate. Pedicels articulated in proximal 1/3, filiform, 4–10 mm, articulation distinctly swollen. Flowers 15–30 in whorls; inner tepals orbiculate-reniform or broadly scutate, 6–9 × 6–11 mm, as long as wide or nearly so, base cordate to subcordate, margins entire or subentire, occasionally irregularly erose near base, apex abruptly acute to acute; tubercles usually 1, small, 1–2 mm, normally less than 2 times as wide as inner tepals, rarely absent or indistinct. Achenes reddish-brown, 3–3.5 × 1.7–2.5 mm. 2n =40.


Phenology: Flowering late spring–summer.
Habitat: Roadsides, waste places, meadows, river valleys
Elevation: 300-700 m

Distribution

V5 1062-distribution-map.gif

Introduced; Alta., Man., N.Dak., e, ec Europe, w Asia (the Caucasus), w Asia (Siberia), elsewhere

Discussion

Rumex confertus was placed in subsect. Conferti Rechinger f. This species is common and ecologically successful in central and eastern Europe; it may be expected elsewhere in temperate regions of North America.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.

... more about "Rumex confertus"
unwinged +  and weakly winged +
reddish-brown +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
pyramidal +, compressed-3-gonous +  and 3-gonous +
1.7mm;2.5mm +
yellow +  and brownish yellow +
ovate +  and elongate +
abruptly acute;acute +
Sergei L. Mosyakin +
Willdenow +
not articulated +
abruptly acute +  and acute +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
ovate-elliptic;ovate;ovate-elliptic;ovate;ovate-triangular +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
foliaceous +  and perfoliate +
scale-like +
tuberculate +
just below the soil surface or and above the soil surface +  and spreading +
Russian dock +
Alta. +, Man. +, N.Dak. +, e +, ec Europe +, w Asia (the Caucasus) +, w Asia (Siberia) +  and elsewhere +
300-700 m +
free +  and distinct +
unisexual +, bisexual +  and , +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Roadsides, waste places, meadows, river valleys +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
always distinctly wider and longer +
scutate +  and orbiculate-reniform +
6mm +  and 11mm +
nonmembranous +
deciduous +
cauline +  and basal +
dentate +  and entire +
pubescent +  and glabrous +
abruptly acute +  and acute +
smaller +
swollen +
partly +  and foliaceous +
persistent +  and deciduous +
cylindric +
membranous +
anatropous +, , +  and orthotropous +
accrescent +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
spreading;erect +
red;pinkish;red;pinkish;green +
campanulate +
accrescent +
fleshy +, indurate +  and membranous +
Flowering late spring–summer. +
(2-)3(-4)-carpellate +
slender;stout +
vertical +  and oblique +
Introduced +  and Illustrated +
100 cm1,000 mm <br />1 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
papillose-pubescent +  and glabrous +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +
plumose +  and fimbriate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
distinct +
reflexed;spreading +
spreading;erect +
Rumex alpinus var. subcalligerus +
Rumex confertus +
Rumex sect. Rumex +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0-2 times as wide as inner tepals +
stoloniferous +  and rhizomatous +
papillose-pubescent +  and glabrous +
10 +, 9 +, 8 +  and 7 +